Means for making pipe.



No. 734,375. PA-TBNTEi) JULY 21,1903, A. T. SYMMS.

MEANS FOR MAKING PIPE.

APPLICATION FILED JUNE 2, 1902.

N0 MODEL.

WITNESSES M/VENTOR 777A \X/M. 7 mawv I BYMM ATTORNEY THE NORRIS PETERS 50., morauma, wlsumumu. n. c

' UNITED STATES Patented July 21, 1903.

ARTHUR TRUMAN SYMMS, OF CHICAGO, ILLINOIS.

MEANS FOR MAKING PIPE.

SPECIFICATION forming part of Letters Iatent No. 734,37 5, dated J uily' 21 ,1903. Application filed June 2, 1902. $erial No. 109,969. (No model.)

1'0 alt whom it may concern:

a citizen of the UnitedStates, residing at Ohicago, in the county of Cook and State of Illinois, have inventeda new and useful Means for Making Pipe, of which the following is a specification.

My invention relates to means for producing metal pipe; and it consists of a mold mounted in bearings and adapted to revolve, so that in the process of making the pipe the metal is introduced in a highly-heated condition and is induced to flow. to the desired shape and thickness by virtue of centrifugal action, as is described hereinafter and illustrated in the accompanying drawings, in which- A Figure 1 is an axial vertical section of an apparatus in which is embodied my invention and which is adapted to form the ordinary bell-end cast-iron pipe, of which latter one is shown in axial section in the mold. Fig. 2 is a detached axial section of the revoluble mold to clearly illustrate construction. Fig. 3 is a detached axial section of a piece of pipe, also shown in Fig. 1, to clearly illus reason that the cooling process will take place much more rapidly and the rate of production increased. The mold has one of its ends flared outwardly,'forming the bell B,

the mold is a portion F, finished to form a journal-bearing for largering-box G, so that the outer end of the moldis held free from obstruction.

At H is removably secured a head from which inwardly projects a boss I, having a large hole J disposed axially therethrough and forming a passageway through which molten metal may be introduced-for in-' stance, by means of a bent chute K or in any other convenient manner. Boss I is smaller in diameter and shorter than the inside of the bell B of the mold and forms a core to hold the metal forming the-bell of the pipe after the parts of the mold have been assembled, as seen in Fig. 2, and in position, as in Fig. 1, and power applied to revolve the same at the proper speed molten metal is introduced into the interior through hole J, when by centrifugal action the portion of the mold around the core or boss I will be filled and then the balance of the metal flow along the cylindrical interior surface and form the main body of the pipe L, as shown in Fig. 1. The mold is revolved continuously until the molten metal has frozen to a suflicient degree of stability to be brought to a state of rest,when it may be removed by detaching the front head H, which permits of the pipe being slid longitudinally outwardly as soon as it has shrunken sufficiently from the surface of the mold.

It is obvious that the metal may be poured into the mold when the latter is at rest, after which it may be revolved and produce a similar result, as hereinbefore described, when the metal is introduced at a temperature sufficiently high so as not to'chillbefore' a sufliciently high speed has been attained in the revolving mold. V

The general form of the mold is cylindrical, and pipe in the form of a perfect cylinder and no bell at the end may be cast Without the use of a core.

I claim as my invention- A mold consisting of a body portion formed IOO at one end with an outwardly-flared bell, the I body portion and havingits inner end curved I0 inner end of the interior of which terminates l and arranged adjacent the curved shoulder in a curved shoulder, a head secured to one thereof, and means for rotatably mounting end of said body portion, a flanged head se- I said mold, substantially as and for the pur- 5 cured to the flared end of said body portion, pose specified.

a hollow core formed integral with the last- ARTHUR TRUMAN SYMMS. named head and projecting inwardly there- \Vitnesses:

from, said core having its periphery spaced OSCAR SNELL, from the interior of the said flared end of the l J AS. H. PERKINSON. 

